Power take-off transmission



Jan., 3, 1950 H. J. GREINER POWER TAKE-OFF TRANSM'SSION s sheets-sheet 1 Filed April 6, 1948 ,my m mn d@ NF V0 7.6 W f A W M M Y B NW N W, n, QN H 9|- l l, l :I I WHI u- MN NN @N NW mm. @N MN NN @\\NN \\N Jan. 3, 1950 H. J. GREINER POWER TAKE-OFF TRANSMISSION 5 Sheets-Sheet 2 Filed April e, 1948 Jan, 3, 195@ *L 3.GRE1NER `,493,132

POWER 'TAKE-OFF TRANSMISSION Patented Jan. 3, 1950 UN IT ED STATES PAT GFF ICE POWER 'BAKE-OFF TRANSMISSION Henry J. Greiner, Anoka; Minn;

Application: April 6, 1948;, SerialiNo.;19,405

(Cl. 74-l5.88')` 2i Claims. l

My; invention: relates: to: power." take-0K transmissions, and` more: panticularly.r te, such. trans.- missions:` wherein: a. driver, shaft is: selectivelsI coupledzto Oneor more? driven devices for operating the latter;

Wit-lr. the foregoing in view an obiect ofmy invention is to provide an improved power take.- oft transmission-.-

t further object; is. tof provide an: improved powerI take-oo. transmission. which provides meansf'or coupling-:a singledrve device-to, either or bothfota pair. otdrivenidevices..

A furtherobjectisstoprovide ina power takeoff transmissionsuchiasthat last. described novel means; providing: aY sealed-inl lubrication for the moving parts;

A further objecty s-4 to. provide; a` novel, pow-.er take-offv4 transmission which includes` means: for coupling1 a drive. and* a drivenshaittogether and' simultaneously or alternately provide a pawer `take-oft meansfor thedriveshafft'.

A` further object is to.- provide, an. improved power take-olf. transmission which a compact device: embodying sealed-in. li1bricati'on-,- which is` readily and economically, manufactured; and 'l which is strong; andsturdy in use.

Other cbjfects. andadvant'ages reside initheparticular structure of.' the invention,` combination and arrangement o the several' parts thereof, and.will' be readily apparent' to those skilled in the, art upon reference td the attached. drawing, in connection, with the following` specication, wherein the, device, is shown, described. and claimed.

In the drawing.; l f

Figure L is alongitudinalverticalsectional'View taken centrally througha preferred form of..` the invention;

Figure 2 isa View similar to Figure labut showing certain of' the parts thereof in elevation and showing another positionofthepart's;

liigure 3 is a View similar to Fignres l and. 2, but showing. the, parts inathi'rdpostibn; Y

Figure 4' is. a transverse verticalsection'al view taken sui'istantiall'y on the planeA of" the line 4-4 of Figure 2;

Figure. 5 isv a transverse, vertical sectional view taken substantially onthe plane. ofthe. line. .ri-5 .of Figure. 2.

In, the. drawing, wherein like reference. characters. have heenused throughout the. several views tofdesignatelike parts- |70 andti designate-apair of spaced frame members respectivelymounting bearing housings; le. andi I 3- thereon. Such' heus;-

ings respectively house'.A a, pair: of anti-friction 2. bearings. Thus;J the? left-hand bearing? housing; Figures, 1 to` 35 includes an outerbearing Mi and an, innerand independent.- bea-ring. Iz; In4 like manner', the rightfhandf: housing. I3 includesy an outer bearing I15= andan inner hearing I1.,

A driven shaft 20 is operatively; connected to theouter hearing4 IA of theleft-handehousingr I=2, wherebyy toi mount such` shaft for. tree: rotation rela-tive to the support. t0.. t suitable: sealing disc, or'the like, I8: surrounds the: shaft 20: out'- wardly of the housing Ii2 to provideV a lubricant seal for the bearingsx In likemannen. the, outer bearing l5 for the right-hand housing t3; has mounted therein for rotation relative-v thereto: a drive` sha-ft 34.. The-outer surfaceofv the housing I3is sealed by asuitable-sealing washer-orsealzing; ring` I9; The'y left-hand innerbearing: Iirro tatably mounts the journal? of: a hubs 22: of;` an end plate- 23 of a power take-olf wheek 24; The outer periphery-of the: wheell 24 may' be: formed with. ay plurality of p|.1l1e3,rgrooves 25. Obviously1 the outer.` periphery of the wheel 24F could; embrace gears, sprockets; or other: forme. of power transmission means:

'I-he inner surface of the: end plate 23 is: re'- cessed to seat therein` af. hearingl 26- which supe pcrts they sha-ft,v onl the;` one: hand and the; hubA 22 of thetakem"whee1f24=ontheother1 Thus; the sha'f-t 20 is mounted ineboththeiouter bearing M and also the hui)v bearing. 26sj Inf like manner, the huh 22 isv rotatablel in: the inner bearingz I'6, and on the" hub bearing: 26;, 0bvious1y,. then, the driven shaft`V 20 anda tlie wheel 2,4: arey free: toifroe tate relative to each other'on the bearings aforesaid, rBhe inner end of thezdrivenY shafti 2-IJ has fixed thereon inv any' suitable; manner a driven circular" clutch eiem'entiin the'form of a gear or pinion 2 I;

'IY-'he right.-hand.l innen bearing. I'I.I rotatably mounts.y the journal. of; aa hub21 of the" end plate 28? for the takesoff wheel 24; The inner surface or the hub- 2T also mounts a hearing 29 which rotatably supports thet hub; thereon, and alsol cooperates, with the outer bearing. I5 to. rotatably mountv the drive: shaft/34; The inner.- free' end of the drivesha'ft 34 hasmountedthereon a; hub 3&5 for a oruga-shaped4 clutch. element in theform of a driving cupsgear 36.. The inner periphery oi` the` hub: 35.v andthe outer. periphery of the'free endr ofthe' drive shaft 314: are' formed with interengaging splines 38 and 31, respectiveiyFigure 4, whereby: the driving; gear." 3.61 is axiallytslidable on the' drive: shaiii' 34,*i whilei simulta-neously being rotataolc: t-herewitlnA Also, it. ist.' obvious' that the drive@ shaft andthe take-01T; wheel are freelyro- The inner periphery of the take-off Wheel 24 is provided with any suitable means, such as the annular boss 3l, to which is secured an annular clutch element in the form of a ring gear 32 by any suitable means, such as the machine screws 33. The ring gear 32 is provided with inwardlydirected teeth 4I which are adapted to mesh at times with the outwardly-directed teeth 39 of the cup-gear 36. The cup-gear 36 is also provided with a set of inwardly-directed teeth 40, Figure 5, which are adapted to mesh at times with outwardly-directed teeth 42 on the driven pinion 2|. Thus, Figure 1 shows the teeth 39 of the cup-gear 36 in driving mesh with the teeth 4I of the ring gear 32. In Figure 2, the outwardly-directed teethv 39 of the cup-gear are in mesh with the inwardly-directed teeth 4I of the ring gear 32, while at the same time the inwardlydirected teeth 40 of the cup-gear are in mesh with the outwardly-directed teeth 42 of the driven pinion. Referring again'to Figure 2, if the cup-gear 36 is now moved from right to left to the broken line position designated by 43, it will be apparent that the exterior teeth 39 will be disengaged from the teeth 4I of the ring gear, but that the inwardly-directed teeth 46 will be still in mesh with the teeth 42 of the pinion 2I. It is, therefore, apparent from the foregoing that the cup-gear is selectively adapted to mesh with the ring gear 32, whereby to drive the take-off wheel 24, or with both the ring gear 32 and the pinion 2I, whereby to drive both the take-off wheel 24 and the driven shaft 23 simultaneously, or the cup-gear may be registered with the pinion alone, whereby to drive only the driven shaft 20. Finally, if the cup-gear 36 is moved still further to the left, Figure 3, it will be noted that the inwardly-directed teeth 40 will pass beyond the teeth 42 of the pinion, whereby the latter are located in an untoothed recess 44 of the cup-gear. Obviously, this last position represents a neutral position, whereby the drive shaft 34 is free to rotate without transmitting any power to either the take-off wheel 24 or the driven shaft 2U.

Any suitable means may be provided for actuating the drive gear 36 axially of the drive shaft 34. In the preferred form of the invention, the drive shaft 34 is axially bored, as at 45, for slidably seating therein an actuating rod 46. The forward end of the rod 46 is fixed by any suitable means to the web 4l of the cup-gear 36. Rearwardly ofthe cup-gear 36, the drive shaft 34 is longitudinally slotted, asat 49, for the passage therethrough of a pin 5D which operatively connects a double-flanged collar 5I onto the shaft 34 for rotating and sliding movement relative thereto. A yoke 52 has its bifurcated lower ends received in the collar 5I between the flanges thereof for actuating the Same longitudinally of the drive shaft 34.

The yoke 52 depends from the forward end of a tubular actuating rod 53 which in turn is slidable on a guide rod 54 in a telescoping manner. The free inner end of the guide rod 54 is formed with a plurality of adjacent annular grooves 55, 56, 51 and 58 thereon in which a. spring-loaded ball latch 59 carried by the yoke 52 is selectively seated. A lubricant-tight casing 63 surrounds the drive shaft 34 together with the collar 5I and the telescoped ends of the actuating rods 53 and guide rod 54. The casing 60 is preferably fixed to either the support II or a related part, such as the bearing housing I3, by being bolted thereto, as at 62. Any suitable means, such as g-rooves 63 and the key 64, may be provided for centering the casing 60 in proper relation to the related parts. The guide rod 54 is fixed to the casing 60 in any suitable manner, as by a nut 65 threaded on the free end thereof outwardly of the end Wall of the casing and a lock nut 6l on the inner periphery of the casing end wall. Any suitable packing gland, such as 66, surrounds the outer end of the actuating rod 53 which projects through the opposite end wall of the casing 50. A suitable packing washer 6I surrounds the drive shaft 34 to provide a grease seal for the outer end wall of the casing 60. The free end of the actuating rod 53 is formed with any suitable means, such as the eye 68, for detachable connection to a suitable actuating means, not shown.

The operation of the device in brief is readily accomplished by actuating the actuating rod 53, whereby to move the same and the collar 5I longitudinally relative to the drive shaft 34. Such movement, by virtue of the pin 50 and slot 49, together with the slidable rod 46, is effective t0 move the cup or drive gear 36 longitudinally of the drive shaft 34. The ball latch 59 will seat in a selected one of the annular grooves 55, 56, 5T or 58. whereby to maintain the drive gear in a selected position. Thus, with the ball 59 seated in the groove 58, Figure l, the drive gear is locked in meshing engagement with the ring gear of the take-off wheel 24, whereby to drive the latter without driving the driven shaft 20. However, if the drive rod 53 is advanced to seat the ball latch 59 in the next groove 51, the drive gear is connected simultaneously to both the drive or takeoff wheel 24 and to the pinion 2I of the driven shaft 20. If the ball latch is next seated in the next adjacent groove 56, such position not being shown except by broken line 43, Figure 2, the drive gear will be engaged with the pinion 2| whereby to drive lthe driven shaft 20 while leaving the take-off wheel 24 free for relative rotation. Finally, if the actuating rod 53 is advanced to Figure 3 position, wherein the ball latch is seated in the last groove 55, the drive gear 36 is disengaged from both the ring gear 32 and the pinionA 2|, and the device may be said to be in neutral.

While I have shown and described what is now thought to be a preferred embodiment of the invention, it is to be understood that the same is susceptible of other forms and expressions. Consequently, I do not limit myself to the precise vstructure shown and described hereinabove except as hereinbefore claimed.

I claim:

1. A power take-oil. transmission, comprising a drive shaft and a driven shaft, each including a free end, means rotatably mounting said shafts with said free ends in juxtaposed end-to-end relation, a hollow cylindrical hub for a power take-off wheel, means mounting said hub concentrically on said shafts for free rotation relative thereto, an annular clutch element including internal clutch teeth carried by said hub inwardly thereof in the region of said free end of said drive shaft, a circular clutch element xed to said free end of said driven shaft in axiallyspaced juxtaposition relative to said annular clutch element, said circular clutch element having external clutch teeth having an outside diameter smaller than the inside diameter of said clutch teeth of said annular clutch element, a cup-shaped clutch element splined to said drive shaft, said cup-shaped clutch element including internal and external clutch teeth, said external teeth being engageable with said clutch teeth of said annular clutch element, said internal teeth of said cup-shaped clutch element being engageable Wit-h said clutch teeth of said circular clutch element, means for movingsaid cupshaped clutch element axially of said drive shaft from a neutral disengaged position to a position coupling said drive shaft to said driven shaft and said hub and to a position coupling said drivel shaft to a selected one of said driven shaft and hub.

2.A power take-olf transmission, comprising a drive shaft and a driven shaft, each including a. free end, means rotatably mounting said shafts Wit'h said free ends in juxtaposed end-to-end relation, a power take-off wheel including an internally-toothed annular clutch element fixed thereto, means mounting said wheel concentrically of said shafts for free rotation relative thereto, said annular clutch element including internal clutch teeth being concentrica-lly spaced from one of said free ends, a circular clutch element fixed to said free end of one of said shafts and including external clutch teeth, a cup-shaped clutch element splined to said free end of the other shaft, said cup-shaped clutch element inc-luding internal clutch teeth adapted to mesh with said teeth of said circular clutch element and external clutch teeth adapted to mesh with said teeth of said annular clutch element, and means for moving said cup-shaped clutch element axially of said last shaft from a neutral disengaged position to a position in mesh with both of said circular clutch element and annular clutch element and to positions selectively meshing with one of said circular clutch element and annular clutch element.

HENRY J. GREINER.

REFEREN CES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 2,379,775 Young July 3, 1945 2,390,513 Couse Dec. 11, 1945 

